2 jack rusell terrier dog are following a trail on a field. dogs are 4 and 12 years old

acre action active addiction animal animals are attentive breed brown canine cute dog dogs employment field finds follow free fun funny group happy jack joy joyful looking mammal meadow nature nose obedience obedient object old outdoor pack pet play purebred run rusell russell seek several showing smell sniff space sport terrier toy track trail training two vacation work years